1989 Jaquar XJS 12Cyclinder

1989 JAGUAR XJS
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LILLIE
  • MEMBER
  • 5 POSTS
73,000 miles
Car will not excelerate and it cuts off when it reaches operating temperture. The fuel pressure is too high also. I've changed several parts, the engine computer, fuel pressure regulators, throttle position switch, spark plugs and wires, rotor button, throttle switch and it still doing the same thing. What do I do to correct this problem? I will greatly appreciate some answers I have tried everything.
Nov 27, 2007 at 3:50 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Check the fuel return line to the tank for damage!
Nov 27, 2007 at 5:14 PM
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MERLIN2021
  • ✓ASE Certified Mechanic
  • 17,250 POSTS
  • ASE Certified Mechanic
Check your catalytic converters for either a melted or broken bed condition.
Nov 28, 2007 at 2:50 PM
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